Hoisting-machine.



w. BARKER.

HOlS'iING MACHINE.

APPLICATIOF? FILED OCT. 8. 1913.

Patented Oct. 5, 1915 3 SHEETS'SHEET l.

fame/m l3 TM w. BARKER. HOISTING MACHINE.

APPLICATION FILED OCT- 8. 1913.

1,155.74, Y Patented 00t.5,191 5.

3 SHEETSSHE ET 2.

Patenmed Oct. 5, 1915.

3 SHEETSSHEET 3.

WENDELL A. BARKER, 0F CHICAGO, LLINOIS, fiiSSIGNUTi T0 TEL-MAS EIIEVATQ IE. COMPANY. 01 CI-TECAGO, ILLINQZU, A CUR-PGYi-ATEQN U ILLINOIS.

' HcrsTINs-Macnrms.

mamas.

Application filed Qctober E 0 ticularly to a new and improved speed cianging nna-hanisn'i \vluuclri' the winding" drums may be rotated either at inll speed or at a reduced speed.

The invention will be readily undo: tood 15 when considered in connection with the ac- 'brieily descriliiing" the common companying drawings forming apart of this specification and illustrating one practi cal embodiment of the inyention, and in which V Figure 1 is a side elevational. View of: the complete machine. Fi is a top plan yiew thereof. Fig. 3 a View partly in elevation and partly in vertical section through the speed-changing gear. Fig. t a view partly in elevation and partly in horizontal section through a portion of the speed-changing gear. 7 Fig. 5 is an end elevational View of the parts shown in Fig. 4' as seen from the right of the latter figure and partially broken away. Fig. (l is a detail view of portion of the. actuating mechanism oi t speed-changin c gear.

Referring: to the drawings.

the base-plate on which are mounted sidetrames 11 and 12 carrying the journals and Li oi the winding drums 1:) and it; to which are attached the lead and boom lines. On the base also mounted an electric tor conventionally shown at 1.7 on the armature shri t of which is a. ulley 15% that, through a belt 15) drives a pulieyQO keyed to an intermediate shaft ll. Fast with the drums 15 and 16 are rigid spur gears and 23. respectively, that are drivingly engaged by a spur pinion iieretofore it has been the common practice to key the spur gear 24 directly on the shaft 21, so that but a single speed of rotation of the drums was 'possible under a uniform motor speed.

My present invention provides a mechanism through which the pinion 24: may be driven either at the same speed as themulley 20, or at a reduced speed relatively to that Specification of Letters Patent.

' Patented Get. 5, 1915. 191a. seemin vetoes.

of'thc pulley F20; and this mechanism. 1 will no w describe.

The shaft 21., as will be seen by reference to Figs. 3 and a. is a hollow or tubular shaft and is journaled in bearings mounted on the plate 10. Surrounding: the shaft 21 is an outer tubuh'ir shaft 26 adapted to rotate upon and ii'idependentiy of the inner shaft by ,nieans of interposed wear sieeves or bushings Referring to s. L and 5 journaled upon tne outer end portionsof the shafts 2i and 26 through interposed wear sleeves or bushings :29 and Q8 scinbled hollow circuiar structi'u-e comprising friction brake and clutch ring-rs 30 and 81 respectively and an interposed internal g ar 2-H all securely united by through-bolts iiej 'it'i on the extreme outer end of shaft 21 is a spider 3%, on the outer ends of the arms of which are slidably mounted a pair o'i' clutch-shoes 37 "capable of a limited bodily movement in a radial direction. These clutch-shoes cooperate with the inner sirface of the cliitcliring 31. The two clutch shoes are connected. on opposite sides of the spider Ell by sleeve nuts iifi'pivoted to the clutch-shoes and citigaging a rod 37 having: right and left screw threads. On each threaded rod 37 is an arm 38, said arms being connected. by toggle links 39 to the enter end-of a. rod it) that extends through the inner tubular shaft- 21' beyond the optiosite bearing. From this it will be seen that when the rod 4-0 is moved to the left in Figs. 3 and i, the toggle links 39 will be straightened and the threaded rods 37 rotated in a direction to force the sleeve nuts 36 outwardly, whereupon the clutch-shoes 35 are forced into frictional holding engagement with the clutch-ring; 31..

integral with or secured to one end of the outer tubular shaft "26 is a disk 41 lying within the brake-ring 30 and having mounted thereon a series of planetary pinions 42 which mesh with the internal gear 32 "and stein e9 mounted in one end of the yoke 46,

is an as- A by 11 pi 0 hereof tends to aw he brake pun M such case m' 1%; one side of i. gusable lu i mmung m a the bl'ilkfifihfiim'mvn clutch-1:

phanetnry that cranes M uh]; @LO}. Q

t r 01 one s 5 The Lhe ritagee tion with a motor, and a winding drum, of a'tubular'shafhgeared to said drum, a drive shaft ext'ending through said tubular shaft "and geared to said. motor, a brake ring, a

planetary gear driving connection between said shafts including an internal gear fast 1 with said brake ring, a brake automatically engaging said brake ring when the latter is turned in one direction and automatically disengaging said brake ring When the latteris .turned in the opposite direction, and a mechanical clutchdir'ectly connecting said power shaft with said internal gear.

3. In a' hoisting machine, the combination with a motor, and'a Winding drum, of a tubular shaft gearedto said drum, a power shaft extending through said tubular shaf and geared to said motor, a brake ring, a

"clutch ring, a planetary gear driving connection between said shafts including an internal gear fast with said brake and clutchv rings, a brake automatically engaging said brake ring When the latter is turned in one direction and automatically disengaging said brake ring when the latter is turned in the opposite direction, a clutch shoe operative to directly -connect said power shaft with said clutch ring, and manually oper-- engagement with.

one end geared to both of said drums, an

inner tubular'shaft extending through said outer tubular shaft and geared to said Inotor at its corresponding end, aplanetary gear driving connection between said shafts at the other end of the latter, an automatic brake for rendering said planetary gear driving connection operative to transmit a low speed movement, a clutch driving connection between said shafts woperating through the parts ofsaid planetary gear to transmit a high speed movement, and means extending through said inner tubular haft for operating said clutch drivin connection. WEN DELL A. ABKER.

Witnesses:

- SAMUEL N. POND,"

MARY M. Lnrro, 

